The range officer is giving you a very good possible explanation. There are others, as well.
But he uis also right about the action.. It is designed to work properly when worked vigorously. Ejection, in particular, is solely dependent upon the rearward velocity of the bolt, which to me is a good thing -- go slow and easy and the brass barely clears the action and can be easily recovered for reloading; work it fast and the empty is gone fast and far and the action is clear for a reload.
But he uis also right about the action.. It is designed to work properly when worked vigorously. Ejection, in particular, is solely dependent upon the rearward velocity of the bolt, which to me is a good thing -- go slow and easy and the brass barely clears the action and can be easily recovered for reloading; work it fast and the empty is gone fast and far and the action is clear for a reload.